Locking device for a casement type window



Aug. 17, 1954 Filed Oct. 24, 1951 R. H. Buss, JR 2,686,688

LOCKING DEVICE FOR A CASEMENT TYPE WINDOW 2 Sheets-Sheet l ATTORNEY Aug. 17, 1954 R. H. BLISS, JR

LOCKING DEVICE FOR A CASEMENT TYPE WINDOW Filed Oct. 24, 1951 2 Sheets-Sheet 2 fw INVENTOR BY WM,M, MM/aa ATTORNEY Patented Aug. 17, 1954 LOCKING DEVICE FOR A CASEMENT TYPE WINDOW Robert H. Bliss, In, East Syracuse, N. Y.

Application October 24, 1951, Serial No. 252,867

2 Claims. (01. 292-101) This invention relates to locking devices for casement type windows, and to a method for permanently assembling such locking devices on casement windows, particularly basement or utility type casement windows. More particularly, the invention relates to locking devices of the kind which comprise a locking handle pivoted to the ventilators of windows of the types mentioned above in such a way that in each instance, when the ventilator is moved into its closed position with respect to the frame of the window, one end of the locking handle is positioned to cooperate with a fixed surface on the frame of the window so that the ventilator may then be drawn into close engagement with the frame by movement of the free end of the locking handle. Generally, there is provided on the ventilator a hook device which acts to maintain the locking handle in its closed position.

One of the principal purposes of this invention is to provide a locking device for a casement type window of the kind referred to above in which the locking handle is fixed to the ventilator in a manner which eliminates the need for fastening devices or for devices to provide a pivotal support for the locking handle. A further purpose of the invention is to provide a locking device which permits the use of snap-in screens in conjunction with the easement window without interfering with the normal operation of the locking device.

Another purpose of the invention is to provide a method of fabricating a casement window employing a locking handle so that the locking handle may be properly supported on, and permanently connected to, the ventilator of the casement window without the necessity of employing fastening devices or devices to provide a pivotal support for the locking handle.

Other objectsand advantages of the invention will be apparent from the following description thereof which is made with reference to the accompanying drawings. It will be understood that the detailed description made with reference to the drawings is for the purpose of facilitating an understanding of the invention, and is not to be construed as limiting the invention to the particular details revealed, except as such matters may be specified in the appended claims.

In the accompanying drawings:

Figure 1 is a rear elevational view of a casement type of window employing a locking device of the kind provided by this invention;

Figure 2 is a vertical sectional view on line 22ofFigure1; i 1

Figure 3 is a view on line 3-3 of Figure 2 showing in detail the relationship between the upper end of the locking handle and the upper horizontal ventilator bar;

Figure 4 is a view on line 4-4 of Figure 2 showing in detail the manner in which the handle hook cooperates with the lower end of the locking handle to secure the handle in its window locking position;

Figure 5 is a perspective view of the upper end of the locking handle showing particularly the arcuate section which passes through a pivot slot provided in the upper horizontal ventilator bar, as well as the locking tip of the handle which engages a fixed surface on the upper horizontal frame bar;

Figure 6 is a partial vertical section through the easement window frame and the ventilator showing the ventilator in an open position;

Figure 7 is a similar vertical sectional view showing the ventilator in its closed position with respect to the frame, and also showing the looking handle in a position through which it passes as it is moved toward its locking position;

Figure 8 is a partial vertical sectional view showing the upper horizontal ventilator frame bar, and in dotted lines, the position to which the inner flange of this ventilator frame bar is bent preliminarily to inserting the locking handle into a slot provided in the bar;

Figure 9 is a similar view showing the lower end of the locking bar partially passed through the slot provided in the inner flange of the upper horizontal ventilator bar; and

Figure 10 is a similar vertical sectional view showing the locking handle in operative position within the slot in the upper horizontal ventilator bar, the dotted lines illustrating the position to which the upper flange is returned after the locking handle has been inserted.

A casement window of the kind to which this invention is applicable is illustrated in Figure 1. The window therein illustrated comprises a frame memberZt and a companion ventilator member 22, both the frame and the ventilator member being made up of rectilinear Z-bars which are joined together to provide rigid rectangular units. The length and width of the ventilator member is sufliciently less than the corresponding dimension of the frame member so that the ventilator may be received within the frame member with the outer edges of the ventilator engaging the inner edges of the frame member. The cross-sectional form of the Z-bars of the frame and ventilator members, seen most clearly ventilator is arranged to pivot with respect to the frame member about a horizontal axis or in any other particular manner, and that it is particularly adapted for use on basement windows which are positioned so that they can not otherwise be conveniently reached to open and close them.

Having thus described my invention what I claim as my invention and desire to secure by Letters Patent is:

1. A locking device for a casement type window of the kind having a frame member and a cooperating ventilator member engageable by said frame member when the window is closed, said locking device comprising a locking handle having an arcuate bend towards one end thereof, a locking tip extending from one side of said bend and the shank of said handle extending from the other side thereof, a slot provided in said ventilator member, the arcuately bent portion of said handle being received loosely in said slot, said handle being enlarged between said locking tip and said arcuately bent portion to prevent said handle from being withdrawn from said slot in one direction, a surface on said ventilator provided beneath said enlarged portion of said handle to prevent said handle from being pivoted sufficiently to be withdrawn from said slot in the other direction, and said locking tip being adapted to engage a surface on a frame member.

2. A locking device for a casement window of the kind having rigid rectangular frame and ventilator members comprising Z-bars, the corresponding lateral flanges of said frame and ventilator Z-bars engaging one another respectively, when said window is closed, said locking device comprising an elongated locking handle having towards one end an arcuate section positioned within an aperture provided in the lateral flange of one of the Z-bars of said ventilator, the one end of said handle comprising a locking tip adapted to engage a surface on a frame member, said handle being enlarged in cross-section intermediate said tip and arcuate section to a width greater than that of said slot to prevent said handle from being withdrawn from said aperture in one direction, and the enlarged portion of said handle being positioned above the web of the said one Z-bar to prevent said handle from being pivoted sufficiently to be withdrawn from said aperture in the other direction.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,140,849 Opland Dec, 20, 1938 2,197,150 Lambert Apr. 16-, 1940 2,307,634 Mountjoy Jan. 5, 1943 2,529,088 Leake Nov. 7, 1950 

